heat front in sintering

例句：

1. 1.The process of sintering is essential for the production of high-quality steel.
   烧结过程对于生产高质量钢材至关重要。
2. 2.During sintering, the material is heated to a high temperature and compacted into a dense structure.
   烧结过程中，材料被加热至高温并压实成紧密结构。
3. 3. Sintering is a method used to produce ceramic materials with high strength and low porosity.
   烧结是一种用于生产高强度低孔隙率陶瓷材料的工艺。